Impact of COVID-19 restrictions on the concentration and source apportionment of atmospheric ammonia (NH<sub>3</sub>) across India.

Sci Total Environ · 2023 · PMC10098306 · PMID 37061056

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a decreasing trendno p-value reported

Source appointment results showed that the contribution of industrial emission (Ind) to ambient NH 3 in most megacities showed a decreasing trend (between 11 % and 26 %) during the lockdown period.

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